Methods and apparatus for selecting a wireless network based on quality of service (QoS) criteria associated with an application

Abstract

Methods and apparatus for selecting a wireless communication network based on quality of service criteria associated with an application are disclosed. In one illustrative example, one of several different software applications of a mobile communication device is executed. The software application may be, for example, an e-mail application, an Internet data application, a voice-over-IP application, a video player application, an audio player application, or a video game application. Each software application is associated with different quality of service (QoS) criteria for data communications through a wireless network. The quality of service criteria may include, for example, a bandwidth criterion, a delay criterion, a delay variation criterion, and a data loss criterion. A scanning operation is performed to identify a plurality of a wireless networks available in a coverage area of the mobile device. One of the identified wireless networks is selected for communication based on a match between its available quality of service and the quality of service criterion associated with the executed software application. Advantageously, the most suitable network may be chosen and utilized for each software application.

Description

BACKGROUND[0001]1. Field of the Invention[0002]The present invention relates generally to mobile communication devices and network selection techniques employed thereby, and more particularly to network selection techniques based on quality of service (QoS) criteria associated with software applications on a mobile device.[0003]2. Description of the Related Art[0004]The 3rd Generation Partnership Project (3GPP2) Technical Specification Group (TSG)-P (data services and applications) defines four types of CDMA2000 airlink traffic classes having associated Quality of Service (QoS) attributes: (1) Conversational traffic class; (2) Streaming traffic class; (3) Interactive traffic class; and (4) Background traffic class. Conversational traffic class applications correspond to traditional voice applications which are usually two-way and sensitive to delay, delay variation, and data loss. Streaming traffic class applications are usually one-way and less sensitive to delay and data loss, but...

AI Technical Summary

Benefits of technology

The patent describes methods and devices that can select the best wireless network for different software applications on a mobile device based on their quality of service requirements. This means that each application can choose the network that best meets its specific needs, ensuring the best performance and reliability.

Problems solved by technology

Streaming traffic class applications are usually one-way and less sensitive to delay and data loss, but are sensitive to delay variations and may require a high bandwidth.

These applications can tolerate moderate delay and data loss and have variable bandwidth requirements.

Problems may arise, however, when different types of data applications are utilized by the mobile device.

If a mobile device is operating in home network coverage, it is not guaranteed that its application requirements will be be met.

For example, a streaming traffic class application which requires a high bandwidth will not work if the mobile device's current network provides only a low bandwidth.

As another example, a mobile device under weak signal coverage (typically resulting in high packet data loss) may serve background traffic class applications well but not interactive traffic class applications (e.g. an interactive video game).

In this case, a non-home foreign network suitable for voice may not be suitable for a data application at all.

Even if a data roaming agreement existed between these carriers, the home carrier may still prohibit mobile devices from roaming onto the foreign network in cities where it provides system coverage itself.

When a data call is attempted on such a foreign network, authentication failures typically occur as a result.

This wastes network resources and battery life and gives the end user a poor service experience.

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